A partitioned tray, formed having a bottom wall, side walls, and end walls, are folded into a tray configuration, having an opened top, with a series of both laterally and longitudinally arranged partitions contained within the tray extending upwardly from its bottom wall. The ends of each side wall incorporate foldable tabs therewith, with said tabs arranged for disposition intermediate a pair of foldably connected panels forming each of the tray end walls. One panel of each double panel end wall is foldably connected to the end edge of the bottom wall, while the other panel of the double panel end wall secures to an aperture or slot provided in the bottom wall for retention of the end and side walls into the tray configuration. A plurality of such trays are stackable, one upon the other, and insertable within a container, as for storage or shipment.